[#4] 增加读取dns.conf更新容器内nameserver

src/bind/scripts/update-dns.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+# update-dns.sh
+# 从 /private/argus/etc/dns.conf 读取 IP，写入 /etc/resolv.conf
+
+DNS_CONF="/private/argus/etc/dns.conf"
+RESOLV_CONF="/etc/resolv.conf"
+
+# 检查配置文件是否存在
+if [ ! -f "$DNS_CONF" ]; then
+  echo "配置文件不存在: $DNS_CONF" >&2
+  exit 1
+fi
+
+# 生成 resolv.conf 内容
+{
+  while IFS= read -r ip; do
+    # 跳过空行和注释
+    case "$ip" in
+      \#*) continue ;;
+      "") continue ;;
+    esac
+    echo "nameserver $ip"
+  done < "$DNS_CONF"
+} > "$RESOLV_CONF".tmp
+
+# 替换写入 /etc/resolv.conf
+cat "$RESOLV_CONF".tmp > "$RESOLV_CONF"
+rm -f "$RESOLV_CONF".tmp
+
+echo "已更新 $RESOLV_CONF"
+